Central air conditioners circulate cool air through a system of supply and return ducts. Supply ducts and registers (i.e., openings in the walls, floors, or ceilings covered by grills) carry cooled air from the air conditioner to the home. This cooled air becomes warmer as it circulates through the home; then it flows back to the central air conditioner through return ducts and registers.

Abstract
It became evident nowadays that modernization influences domestic and commercial HVAC industry, and thus high technological and energy-efficient central air conditioning systems are demanded. Therefore, the selection of proper type of central air conditioning system is a crucial target in the construction industry as improper selection can maximize initial and/or running costs of the system and decreases the human comfort and indoor air quality levels. In fact, a pre-assessment of the construction type and budget available is required for selecting the proper type of central air conditioning system. Therefore, there is a continuous need for an updated material in the literature that reviews the central air conditioning systems and applications, which is the motivation of the present chapter. The present chapter reviews the central air conditioning systems and applications. Specifically, all-air systems, all-water systems, and air-water systems are discussed. In addition, all provided systems are further explored through several developed schematic diagrams enabling the identification of their various components and the understanding of their working principles. It is may be of interest to note that this chapter is suitable for undergraduate level students in the fields of HVAC and R, mechanical, and construction engineering.

Air-cooled Series
AT-240, 300

Temp. Range

5~40°C(Indoor )

Humidity Range

40~80%

Cooling Capacity

56~87 KW

Features

  • High inductive electronic temperature control switch, and water pump, easy control the manu-facturing process liquid temperature(accuracy ± 0.5°C)
  • With Euro-well-known brand compressor, low noise, high E.E.R
  • No need cooling water tower.
  • Stainless steel plank type heat exchanger. Significantly promote the cooling efficiency, can save 20% energy.
  • The cold storage trough can store surplus energy according to the demand.
  • Microprocessor control panel and breakdown indication lamp.
  • Multiple security protected device, postponed and automatic return home circulated function.
  • Have dual-temperature system for choice.
  • With open-type stainless steel water tank, easy to clean and maintain.
  • Can set water supply by manual or automatic method.
  • With perfect anti-shock device and feet wheel design, easy to move.

Appliations

  • The plastic hollow molding/plastics runner film roller cooling.
  • Plastic injection and punching molding cooling.
  • All kind microprocessor control machine tools, grinders, machine centers and combined lathe of the principal axis lubrication and hydraulic system cooling.
  • Laser cutting & marking machine.
  • Semiconductor and electron Instruments, ultrasonic cleaning equipment.
  • All kind of machine processes liquid cooling.

Specifications

Model AT-240A
Temp. range 5~40°C(Indoor )
Humidity range 40~80%
Power 3P –220/380V –50/60Hz
Coolant R22/R407
Cooling liquid Water
Export temp 8~30°C ± 1°C
Cooling capacity
50/60Hz
Kcal-h 48,000/60,000
BTU-h 192,000/240,000
kw 56/70
Water flow L/min 380
Water pressure Kg 2
Water piping High pressure rubber tube, Stainless steel piping
Protection system No fuse magnetic switch, water level, against/lack phase, ultra-temp, overload protection
Compressor Kw 7.5×2
Cold-water inlet/outlet 1½"
Remote control AC220V、DC 24V
Color Blue+White
Dimension LxWxH mm 2,180 x 1,050 x 2,020
Water tank L 430
Weight kg 960

Also have the AT-A2, AT-AL, AT-AL2 system further for your choice.
We reserve the right that modification designs and technique parameter change and will not notice specially.

Model AT-300A
Temp. range 5~40°C(Indoor )
Humidity range 40~80%
Power 3P –220/380V –50/60Hz
Coolant R22/R407
Cooling liquid Water
Export temp 8~30°C ± 1°C
Cooling capacity
50/60Hz
Kcal-h 60,000/75,000
BTU-h 240,000/300,000
kw 70/87
Water flow L/min 380
Water pressure Kg 2
Water piping High pressure rubber tube, Stainless steel piping
Protection system No fuse magnetic switch, water level, against/lack phase, ultra-temp, overload protection
Compressor Kw 9×2
Cold-water inlet/outlet 1½"
Remote control AC220V、DC 24V
Color Blue+White
Dimension LxWxH mm 2,180 x 1,050 x 2,020
Water tank L 430
Weight kg 1050

Also have the AT-A2, AT-AL, AT-AL2 system further for your choice.
We reserve the right that modification designs and technique parameter change and will not notice specially.

AIR COOLING SYSTEM
In this type of cooling system, the heat, which is conducted to the outer parts of the engine, is radiated and
conducted away by the stream of air, which is obtained from the atmosphere. In order to have efficient
cooling by means of air, providing fins around the cylinder and cylinder head increases the contact area.
The fins are metallic ridges, which are formed during the casting of the cylinder and cylinder head
The amount of heat carried off by the air-cooling depends upon the following factors